T. Linker et al., MANGANESE(III)-MEDIATED RADICAL ADDITIONS OF DIMETHYL MALONATE TO OLEFINS - THE CHEMOSELECTIVE SYNTHESIS OF DIESTERS AND LACTONES, Synlett, (5), 1996, pp. 468
The radical addition of dimethyl malonate (1) to alkyl-substituted ole
fins 2a-d can be mediated by potassium permanganate and allows the che
moselective synthesis of saturated esters 4a-d. A high degree of stere
oselectivity is observed with 1,5-cyclooctadiene (2d) and trans-stilbe
ne (2f). In the presence of Mn(OAc)(3) the lactone 6f is obtained in d
iastereomerically pure form in 86% yield.